Staple



July 6, 192a.

. 1,591,320; o. w. JOHNSON STAPLE Filed ,Ab'ril 9, 1924 r INVENTOR. 02% W g/O/Y/ZSO/Z.

'ORNEY I v W..'I'OBH8ON,7 or omann; carirronma'.

larl to stiaples, for use in the construction of orm'a for concrete structures: 1 a In the construction of form's for, the vertical walls of proposed concrete buildings,

- much diiliculty is'exp'eriencedin securing the form-boards to the supporting upright studding and especiall so 1f the walls of the in form are to be-space apart for a narrow;

or thin concrete wall; As now practiced the inner or nearwall of the form is nailed to T; -the studding' from the. inside of the alloted' space for 16 is narrow. the'wieldi'ng of the hammer is re-- the concrete wall, and if this space stricted, making the erection of the wall and ffth'e of nails slow andtedious. Also 'gasfthe' na' s are-in such cases, drivenjn on an angle, muchunnecessary; indentation of illythehammer head in the form-board. results, fmarring-the finishedcon'crete wall to that1 .extentas-the'insidesurface of the form is the. outsidesurface of thefconcretewall.

i i 'l ,To rectify th e'i'above deficienciesis one" of 883' 'my objects; LA further object is to ."enable T ,a' wall-form: to be erected rapidly as comred to the present pr 'ce, and an equally rtant'object'isto zii a hle the wall-form 3 torn down orstrippedrapidly. Also another; important objeot'is the presdin as with the use of my invention' no- -na' s at all aredrivenfinto the boards or. studding tomar or-split them. The'stripped timbersbe" 1of -projecting nails are clean'or e ycI'eaIIable, thus the saving of luinber and-nails is considerable and desir able:

1 ..1 thimbersyithout the danger ofbendingfthem,

us I attain the above-objects by the novel emnstrnction of my iastening -staple, and

other objects and advantages of my inventi'on will'appear in'the' sirlnoined description of .the accompanying sheet of drawings, in which:

vice injuse; the form-board's and concrete are shown in section. Fig. 2 is a plan of the lower form-board and studding of Fig. 1 showing my device in engagement therewith.

g earns-.1 Application met-Apia a, use. mm in; 705,10,"

' 5: Mj invenaeii ielaies to d isms.

ervation ofithe. form-boards and the stud-'- H 1.; 1 the body of thestudding 12.?

- Aiurther-objectfis the conservation otmy -jstaples, as'T-Ifhave 'niade. provision for the quick and" easy removal of them "from the the may be used over and over again;

- Figure 1. is a view in' elevation showing.

my e

.an enlarged scale.

. Band 6 are views similar 'toflFig s'.

3 -an 4: of a modification-of'the invention,

3 and 4 are side and face views'respectively of the staple of Figs. 2' and 1 on ATENT OFFICE-1] f and likewise Figs. 7 and 8 represent another modification.

' -.A dverting to the "drawing and figures thereof: the numeral 9 represents inele'vation a portion of a vertical-concrete wall 'which has been poured into the customary wooden form indicated by boards 10 and 11;

The wall shown .is a narrow one','say 6 inches wide, showinghow diflicult itwouldbe in the erection-of the form to secure the inner form-boards" 10 to'the vertical supporting studdin 12 by driving common nails intothe stu ding and atri ht angles thereto through the latter form-Eoards, as wielding the hammer in' the. allotted 6 inch space is too-limited for efiicient results. I

shape of the letter T looking from theface and in the she as shown in 1 2, 3-and 7. In the just My, invention advantageously meetsithe above. problem, and the same consists. of a wire structure formed substantially in 'the- 'recited'figures s owing the face 'view of my staple, the cross-bar 13 is preferably bent back upon itself substantiall to its'midway ositionand is here turne over the said ar from the outside and at right angles thereto as at 14'to form the shank"15, and

which shank is of sufiicient length to cross the form-boards 10 and project a goodly disitance-thereover for driving the staple into In the res' showing the the staple, ltwill beobservedthat the free ends of 'my. staple terminate in pointed iprongs '16 .and 17 substantially positioned at 7 right angles to each otherbutnot in the' side view of same plane, 16 being a. stub hug for apu'r pose to be presently 'set' orth, and 17a prong ,of longer length and formed with a' slight obtuse angle to the major portion of' the shank for apurpose also to be pres ently set forth. y

18 is the head of the drivingleg or prong 17 and is formed 'to outstand from the surface of the studdingwhen the said prong is driven to securing position in the studdmg, I

leaving a space 19 suitable for the entrance of a tool, such as the clawof a hammer,

sents a surface upon which the head 18 abuts or stops, leaving an equivalent space 19 and for the same purpose.

The modified staple shown in the Figs. 5 and 6 is cheaper to construct as the bar 22 does not cross the shank 15, but-this form is 'not as '1 eifieient as the preferred form of staple shown in the preceding figures. In operation, the use of my staple in the erection of the form-wall is as follows: The studding 12 and lowermost form-board having been positioned, my staple is laid on the top edge of the said board with the cross- 4 bar 13 or bar 22 placed vertically, and the head of the stub prong 16 is tapped by the hammer for engagement to the board. This prong prevents the staple from falling or turning and insures the holding of the same in position to said board while the workman, with hands freed from the staple, adjusts himself to drive the head 18 of the other prong in any convenient manner; Driving the latter prong, which as previously stated forms preferably an obtuse angle to the major portion of the shank 15, causes the form-boards to be drawn close to the studding by reason of the angle being spread. Before the head is driven home, the upper form-board is positioned against the studding and slid to position between the studding and the upper half of the cross-bar, then the final driving is done, the contiguous elements being drawn together in rigid holding relation. The shank 15 crossing and ing a shank portion bent to form a pair of sharpened pronged ends disposed in differ ent planes relative to said shank portion, one

of said'pronged ends being of less length than the other and disposed substantially parallel to said shank portion and each of said prongs adapted to be driven into holding position. r

2. A staple of the class described formed in the shape of the letter T having one end of its cross-bar turned substantially at right angles to said cross-bar, and the free end of the shank turned angularly to said shank to form a driving leg for the staple, a-nd'the head of said driving leg so formed as to extend from the surface into which the said leg is driven for the introduction of a tool to remove the staple leg after service.

3. A T-shaped staple formed of Wire, the cross-bar of the T being bent back upon itself substantially to its midway position and then back over said bar to form the shank of the T, the bar terminating in a stub end at right angles to the cross-bar and forming a prong, and the shank terminating in a second prong at an obtuse angle to the shank, said second prong being provided with a driving head so that both prongs may be driven into structural elements having surfaces at right angles to each other to secure said elements to each other.

In testimony whereof I afiix my si nature.

OTTO WQJOH SON. 

